The ELRS EP2 TCXO receiver is an ultra compact, tiny 2.4Ghz receiver with a built in ceramic antenna and temperature compensated crystal oscillator (TXCO).
FrSky ultra mini receiver R-XSR is the evolution of FrSky full range XSR receiver. The R-XSR is a standalone receiver with all the functions of XSR, in addition, it’s almost 1/3 size and 1/3 weight of XSR receiver.
The FrSKY XM+ is a tiny 2.4GHz diversity receiver, weighing in at under 2g is perfect for those racers who are looking to lower their AUW. These are classed as full range, so identical to your X4R, XSR and D4R setups.
The FrSky XSR-SIM Wireless USB Dongle for Simulator allows you to wirelessly connect your FrSky transmitter to a PC and use your FRSKY transmitter wirelessly in a simulator.